KALEIDOSCOPIC images shed light on the viruses that could be lurking in the human body at any time.
The brightly coloured scans taken by transmission electron microscopy (TEM) show shocking yellows, purples and blues of the influenza virus and the clashing pinks and greens of the flavivirus, a genus linked to yellow fever and the Zika virus.
Other psychedelic pictures show Hepatitis A, B and C linked to liver infections up close and the cervical cancer causing papilloma virus (HPV).
The vivid shots also scrutinise herpes and AIDS viruses. The pictures were taken by scientist Cavallini James using transmission electron microscopy.
For some viral diseases, vaccines and antiviral drugs have stopped certain infections, such as smallpox from becoming widespread and have seen them be eradicated. Influenza is one of the deadliest viruses.
According to the Office of National Statistics in 2015, 529, 613 people died as a result of the virus, a rise of 28,189 people compared with 2014.